Undead
o Destroyer negative mana regeneration increased to -6/sec from -3/sec.
o Mana gain of Devour Magic increased to 150 per dispelled unit from 75 per dispelled unit.
o Orb of Annihilation mana cost increased to 50 from 25.
o Orb of Annihilation had a splash damage that was dealing full damage to all targets instead of full damage to the primary target, and reduced damage to nearby targets. This discrepancy has been fixed and the orb now deals damage identical to the functionality in patch 1.14.